FTA 9: 337 (1919).- Type: Volkens 352: Tanzania; Exped. 375, Rwanda (syn- B, destr.).
Andropogon collinus Pilger, in Mildbr., Wiss. Ergebn. Deutsch. Zentr.-Afr. Exped. 2 : 43 (1910), non Lojac. (1909);
Cymbopogon collinus Pilg., Bot. Jahrb. Syst. 54: 287 (1917);
Cymbopogon scabrimarginatus De Wild., Bull. Jard. Bot. Brux. 6 : 20 (1919);
Andropogon scabrimarginatus De Wild., l.c. (1919), in synon.;
Hyparrhenia scabrimarginata (De Wild. ) Robyns, Fl. Agrost. Congo Belge 1: 184 (1929).
Regional litterature: FWTA: 494 (1972); FTEA: 811 (1982); Fl. Rwanda: 286 (1988); Fl. Ethiopia & Eritrea 7: 347, fig (1995); Fl. Zambesiaca: 124 (2002); Pl. Sudan & S Sudan: 132 (2015).
Description:
* Laxly caespitose perennial arising from a short rhizome clad in white cataphylls. Culms up to 1.3 m high and 1-3 mm in diameter at the base, erect or ascending, wiry and slender. Leaves up to 30 cm long and 2-5 mm wide, firm, scabrid on the margins and scaberulous on the nerves; sheaths glabrous, rarely the inner ones pubescent.
* Inflorescence in a narrow, scanty false panicle of 15-40 cm long. Spatheoles 2-4 cm long, narrowly lanceolate, glabrous or thinly hirsute, turning reddish-brown; peduncles 1-2.5 cm long, a little over half as long as the spatheole, pilose above with yellowish hairs. Racemes 1-2 cm long, 4-7-awned per pair, laterally exserted, deflexed; raceme-bases subequal, the superior 1-1.5 mm long, flattened, stiffly barbate, with a small scarious rim; a single pair of homogamous spikelets at the base of the inferior raceme only.
* Sessile spikelets 4.5-5 mm long; callus 0.5 mm long, cuneate, narrowly obtuse at the apex. Lower glume oblong-lanceolate, usually dark purple beneath a covering of white hairs. Awn 1.5-2.5 cm long, the column puberulous with pallid hairs. Pedicelled spikelets 4-7 mm long, villous with white hairs, terminating in a short awn-point 1-3 mm long; pedicel-tooth obscure. Homogamous spikelets 5-6 mm long, villous with white hairs.
Distribution West Africa: Nigeria, Cameroon, Sudan.
Distribution world-wide: DRC, Ethiopia, Uganda, and C, E and southern Africa.